on my network there are 4 Cisco SG300-10 switches connected to each other via a single uplink port. On one of these switches there is a LAG 802.3ad port configured that provides network access for a QNAP NAS. So far so good.
My problem is that I keep having connection issues with some Network Media players that don't support gigabit ethernet speed. These fast ethernet clients are connected to the mentioned switches and suffer from connection problems, "hickups" during video stream (via NFS-UDP). Now as this seems to be a known problem with my kind of setup I got the advice to configure the NAS ports (or the LAG in my case) to support 802.3x flowcontrol. But the advisors always assumed that the problematic fast ethernet clients were connected to the same switch as the NAS, but on my network this is not the case.
So my question is: Do I have to configure 802.3x Flowcontrol just on the NAS ports (LAG), or is it also necessary to configure it on the uplink ports between the switches and on the respective NMP ports in order to work as expected?
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